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Chemistry

Chemistry
Maximum permissible concentration of copper in drinking water in mg/L is

2
1
0.05
0.01

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Chemistry
The fat of a common mussel-secretes a sticky glue that can be used to make heart implants. The unique chemical compound present in the glue is:

Phenyl alanine
Amino phenyl alanine
Dihydroxy phenyl alanine
Hydroxy phenyl alanine

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Chemistry
Entropy of Universe is always

Decreasing
Constant
Increasing
Zero

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Chemistry
Spontaneous change is one in there is:

A lowering of free energy
A lowering of entropy
An increase in Internal energy
Increase in free energy

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Chemistry
The method that cannot be used for removing permanent hardness of water is

distillation
adding caustic soda
boiling
adding sodium carbonate

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Chemistry
Piped Natural Gas (PNG) is used for

Mining
Cooking
Anaesthesia
Welding

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MORE MCQ ON Chemistry

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